// app/api/options/laser_source/route.ts
export const dynamic = "force-dynamic";

import { NextRequest, NextResponse } from "next/server";

const BASE =
(process.env.DIRECTUS_URL || process.env.NEXT_PUBLIC_API_BASE_URL || "").replace(/\/$/, "");

function buildPath(target?: string | null) {
    const url = new URL(`${BASE}/items/laser_source`);
    url.searchParams.set("fields", "id,name");
    url.searchParams.set("sort", "name");
    // if (target) url.searchParams.set("filter[target][_eq]", target);
    return String(url);
}

function readCookieFromHeader(name: string, cookieHeader: string) {
    const m = cookieHeader.match(new RegExp(`(?:^|;\\s*)${name}=([^;]+)`));
    return m?.[1] ?? null;
}

async function dFetch(token: string, target?: string | null) {
    const res = await fetch(buildPath(target), {
        headers: { Accept: "application/json", Authorization: `Bearer ${token}` },
        cache: "no-store",
    });
    const text = await res.text().catch(() => "");
    let json: any = null;
    try { json = text ? JSON.parse(text) : null; } catch {}
    return { res, json, text };
}

export async function GET(req: NextRequest) {
    try {
        const cookieHeader = req.headers.get("cookie") ?? "";
        const userAt = req.cookies.get("ma_at")?.value || readCookieFromHeader("ma_at", cookieHeader);
        if (!userAt) return NextResponse.json({ error: "Not authenticated" }, { status: 401 });

        const target = req.nextUrl.searchParams.get("target");
        const r = await dFetch(userAt, target);
        if (!r.res.ok) {
            return NextResponse.json(
                { error: `Directus ${r.res.status}: ${r.text || r.res.statusText}` },
                { status: r.res.status }
            );
        }

        const rows: Array<{ id: number | string; name?: string; label?: string; title?: string }> =
        r.json?.data ?? [];
        const data = rows.map(({ id, name, label, title }) => ({
            id,
            name: name || label || title || "",
        }));
        return NextResponse.json({ data });
    } catch (e: any) {
        return NextResponse.json({ error: e?.message || "Failed to load laser sources" }, { status: 500 });
    }
}